src/msw/filedlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/filedlg.cpp
   3 // Purpose:     wxFileDialog
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_FILEDLG && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))
  28
  29 #include "wx/filedlg.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/msw/wrapcdlg.h"
  33     #include "wx/msw/missing.h"
  34     #include "wx/utils.h"
  35     #include "wx/msgdlg.h"
  36     #include "wx/filefn.h"
  37     #include "wx/intl.h"
  38     #include "wx/log.h"
  39     #include "wx/app.h"
  40     #include "wx/math.h"
  41 #endif
  42
  43 #include <stdlib.h>
  44 #include <string.h>
  45
  46 #include "wx/dynlib.h"
  47 #include "wx/filename.h"
  48 #include "wx/scopeguard.h"
  49 #include "wx/tokenzr.h"
  50
  51 // ----------------------------------------------------------------------------
  52 // constants
  53 // ----------------------------------------------------------------------------
  54
  55 #ifdef __WIN32__
  56 # define wxMAXPATH   65534
  57 #else
  58 # define wxMAXPATH   1024
  59 #endif
  60
  61 # define wxMAXFILE   1024
  62
  63 # define wxMAXEXT    5
  64
  65 // ----------------------------------------------------------------------------
  66 // globals
  67 // ----------------------------------------------------------------------------
  68
  69 // standard dialog size for the old Windows systems where the dialog wasn't
  70 // resizable
  71 static wxRect gs_rectDialog(0, 0, 428, 266);
  72
  73 // ============================================================================
  74 // implementation
  75 // ============================================================================
  76
  77 IMPLEMENT_CLASS(wxFileDialog, wxFileDialogBase)
  78
  79 // ----------------------------------------------------------------------------
  80
  81 namespace
  82 {
  83
  84 #if wxUSE_DYNLIB_CLASS
  85
  86 typedef BOOL (WINAPI *GetProcessUserModeExceptionPolicy_t)(LPDWORD);
  87 typedef BOOL (WINAPI *SetProcessUserModeExceptionPolicy_t)(DWORD);
  88
  89 GetProcessUserModeExceptionPolicy_t gs_pfnGetProcessUserModeExceptionPolicy
  90     = (GetProcessUserModeExceptionPolicy_t) -1;
  91
  92 SetProcessUserModeExceptionPolicy_t gs_pfnSetProcessUserModeExceptionPolicy
  93     = (SetProcessUserModeExceptionPolicy_t) -1;
  94
  95 DWORD gs_oldExceptionPolicyFlags = 0;
  96
  97 bool gs_changedPolicy = false;
  98
  99 #endif // #if wxUSE_DYNLIB_CLASS
 100
 101 /*
 102 Since Windows 7 by default (callback) exceptions aren't swallowed anymore
 103 with native x64 applications. Exceptions can occur in a file dialog when
 104 using the hook procedure in combination with third-party utilities.
 105 Since Windows 7 SP1 the swallowing of exceptions can be enabled again
 106 by using SetProcessUserModeExceptionPolicy.
 107 */
 108 void ChangeExceptionPolicy()
 109 {
 110 #if wxUSE_DYNLIB_CLASS
 111     gs_changedPolicy = false;
 112
 113     wxLoadedDLL dllKernel32(wxT("kernel32.dll"));
 114
 115     if ( gs_pfnGetProcessUserModeExceptionPolicy
 116         == (GetProcessUserModeExceptionPolicy_t) -1)
 117     {
 118         wxDL_INIT_FUNC(gs_pfn, GetProcessUserModeExceptionPolicy, dllKernel32);
 119         wxDL_INIT_FUNC(gs_pfn, SetProcessUserModeExceptionPolicy, dllKernel32);
 120     }
 121
 122     if ( !gs_pfnGetProcessUserModeExceptionPolicy
 123         || !gs_pfnSetProcessUserModeExceptionPolicy
 124         || !gs_pfnGetProcessUserModeExceptionPolicy(&gs_oldExceptionPolicyFlags) )
 125     {
 126         return;
 127     }
 128
 129     if ( gs_pfnSetProcessUserModeExceptionPolicy(gs_oldExceptionPolicyFlags
 130         | 0x1 /* PROCESS_CALLBACK_FILTER_ENABLED */ ) )
 131     {
 132         gs_changedPolicy = true;
 133     }
 134
 135 #endif // wxUSE_DYNLIB_CLASS
 136 }
 137
 138 void RestoreExceptionPolicy()
 139 {
 140 #if wxUSE_DYNLIB_CLASS
 141     if (gs_changedPolicy)
 142     {
 143         gs_changedPolicy = false;
 144         (void) gs_pfnSetProcessUserModeExceptionPolicy(gs_oldExceptionPolicyFlags);
 145     }
 146 #endif // wxUSE_DYNLIB_CLASS
 147 }
 148
 149 } // unnamed namespace
 150
 151 // ----------------------------------------------------------------------------
 152 // hook function for moving the dialog
 153 // ----------------------------------------------------------------------------
 154
 155 UINT_PTR APIENTRY
 156 wxFileDialogHookFunction(HWND      hDlg,
 157                          UINT      iMsg,
 158                          WPARAM    WXUNUSED(wParam),
 159                          LPARAM    lParam)
 160 {
 161     switch ( iMsg )
 162     {
 163 #ifndef __WXWINCE__
 164         case WM_INITDIALOG:
 165             {
 166                 OPENFILENAME* ofn = reinterpret_cast<OPENFILENAME *>(lParam);
 167                 reinterpret_cast<wxFileDialog *>(ofn->lCustData)
 168                     ->MSWOnInitDialogHook((WXHWND)hDlg);
 169             }
 170             break;
 171 #endif // __WXWINCE__
 172
 173         case WM_NOTIFY:
 174             {
 175                 OFNOTIFY *pNotifyCode = reinterpret_cast<OFNOTIFY *>(lParam);
 176                 if ( pNotifyCode->hdr.code == CDN_INITDONE )
 177                 {
 178                     reinterpret_cast<wxFileDialog *>(
 179                                         pNotifyCode->lpOFN->lCustData)
 180                         ->MSWOnInitDone((WXHWND)hDlg);
 181                  }
 182             }
 183             break;
 184
 185         case WM_DESTROY:
 186             // reuse the position used for the dialog the next time by default
 187             //
 188             // NB: at least under Windows 2003 this is useless as after the
 189             //     first time it's shown the dialog always remembers its size
 190             //     and position itself and ignores any later SetWindowPos calls
 191             wxCopyRECTToRect(wxGetWindowRect(::GetParent(hDlg)), gs_rectDialog);
 192             break;
 193     }
 194
 195     // do the default processing
 196     return 0;
 197 }
 198
 199 // ----------------------------------------------------------------------------
 200 // wxFileDialog
 201 // ----------------------------------------------------------------------------
 202
 203 wxFileDialog::wxFileDialog(wxWindow *parent,
 204                            const wxString& message,
 205                            const wxString& defaultDir,
 206                            const wxString& defaultFileName,
 207                            const wxString& wildCard,
 208                            long style,
 209                            const wxPoint& pos,
 210                            const wxSize& sz,
 211                            const wxString& name)
 212             : wxFileDialogBase(parent, message, defaultDir, defaultFileName,
 213                                wildCard, style, pos, sz, name)
 214
 215 {
 216     // NB: all style checks are done by wxFileDialogBase::Create
 217
 218     m_bMovedWindow = false;
 219     m_centreDir = 0;
 220
 221     // Must set to zero, otherwise the wx routines won't size the window
 222     // the second time you call the file dialog, because it thinks it is
 223     // already at the requested size.. (when centering)
 224     gs_rectDialog.x =
 225     gs_rectDialog.y = 0;
 226 }
 227
 228 void wxFileDialog::GetPaths(wxArrayString& paths) const
 229 {
 230     paths.Empty();
 231
 232     wxString dir(m_dir);
 233     if ( m_dir.empty() || m_dir.Last() != wxT('\\') )
 234         dir += wxT('\\');
 235
 236     size_t count = m_fileNames.GetCount();
 237     for ( size_t n = 0; n < count; n++ )
 238     {
 239         if (wxFileName(m_fileNames[n]).IsAbsolute())
 240             paths.Add(m_fileNames[n]);
 241         else
 242             paths.Add(dir + m_fileNames[n]);
 243     }
 244 }
 245
 246 void wxFileDialog::GetFilenames(wxArrayString& files) const
 247 {
 248     files = m_fileNames;
 249 }
 250
 251 void wxFileDialog::DoGetPosition(int *x, int *y) const
 252 {
 253     if ( x )
 254         *x = gs_rectDialog.x;
 255     if ( y )
 256         *y = gs_rectDialog.y;
 257 }
 258
 259 void wxFileDialog::DoGetSize(int *width, int *height) const
 260 {
 261     if ( width )
 262         *width = gs_rectDialog.width;
 263     if ( height )
 264         *height = gs_rectDialog.height;
 265 }
 266
 267 void wxFileDialog::DoMoveWindow(int x, int y, int WXUNUSED(w), int WXUNUSED(h))
 268 {
 269     gs_rectDialog.x = x;
 270     gs_rectDialog.y = y;
 271
 272     // our HWND is only set when we're called from MSWOnInitDone(), test if
 273     // this is the case
 274     HWND hwnd = GetHwnd();
 275     if ( hwnd )
 276     {
 277         // size of the dialog can't be changed because the controls are not
 278         // laid out correctly then
 279        ::SetWindowPos(hwnd, HWND_TOP, x, y, 0, 0, SWP_NOZORDER | SWP_NOSIZE);
 280     }
 281     else // just remember that we were requested to move the window
 282     {
 283         m_bMovedWindow = true;
 284
 285         // if Centre() had been called before, it shouldn't be taken into
 286         // account now
 287         m_centreDir = 0;
 288     }
 289 }
 290
 291 void wxFileDialog::DoCentre(int dir)
 292 {
 293     m_centreDir = dir;
 294     m_bMovedWindow = true;
 295
 296     // it's unnecessary to do anything else at this stage as we'll redo it in
 297     // MSWOnInitDone() anyhow
 298 }
 299
 300 void wxFileDialog::MSWOnInitDone(WXHWND hDlg)
 301 {
 302     // note the dialog is the parent window: hDlg is a child of it when
 303     // OFN_EXPLORER is used
 304     HWND hFileDlg = ::GetParent((HWND)hDlg);
 305
 306     // set HWND so that our DoMoveWindow() works correctly
 307     SetHWND((WXHWND)hFileDlg);
 308
 309     if ( m_centreDir )
 310     {
 311         // now we have the real dialog size, remember it
 312         RECT rect;
 313         GetWindowRect(hFileDlg, &rect);
 314         gs_rectDialog = wxRectFromRECT(rect);
 315
 316         // and position the window correctly: notice that we must use the base
 317         // class version as our own doesn't do anything except setting flags
 318         wxFileDialogBase::DoCentre(m_centreDir);
 319     }
 320     else // need to just move it to the correct place
 321     {
 322         SetPosition(gs_rectDialog.GetPosition());
 323     }
 324
 325     // we shouldn't destroy this HWND
 326     SetHWND(NULL);
 327 }
 328
 329 // helper used below in ShowCommFileDialog(): style is used to determine
 330 // whether to show the "Save file" dialog (if it contains wxFD_SAVE bit) or
 331 // "Open file" one; returns true on success or false on failure in which case
 332 // err is filled with the CDERR_XXX constant
 333 static bool DoShowCommFileDialog(OPENFILENAME *of, long style, DWORD *err)
 334 {
 335     if ( style & wxFD_SAVE ? GetSaveFileName(of) : GetOpenFileName(of) )
 336         return true;
 337
 338     if ( err )
 339     {
 340 #ifdef __WXWINCE__
 341         // according to MSDN, CommDlgExtendedError() should work under CE as
 342         // well but apparently in practice it doesn't (anybody has more
 343         // details?)
 344         *err = GetLastError();
 345 #else
 346         *err = CommDlgExtendedError();
 347 #endif
 348     }
 349
 350     return false;
 351 }
 352
 353 // We want to use OPENFILENAME struct version 5 (Windows 2000/XP) but we don't
 354 // know if the OPENFILENAME declared in the currently used headers is a V5 or
 355 // V4 (smaller) one so we try to manually extend the struct in case it is the
 356 // old one.
 357 //
 358 // We don't do this on Windows CE nor under Win64, however, as there are no
 359 // compilers with old headers for these architectures
 360 #if defined(__WXWINCE__) || defined(__WIN64__)
 361     typedef OPENFILENAME wxOPENFILENAME;
 362
 363     static const DWORD gs_ofStructSize = sizeof(OPENFILENAME);
 364 #else // !__WXWINCE__ || __WIN64__
 365     #define wxTRY_SMALLER_OPENFILENAME
 366
 367     struct wxOPENFILENAME : public OPENFILENAME
 368     {
 369         // fields added in Windows 2000/XP comdlg32.dll version
 370         void *pVoid;
 371         DWORD dw1;
 372         DWORD dw2;
 373     };
 374
 375     // hardcoded sizeof(OPENFILENAME) in the Platform SDK: we have to do it
 376     // because sizeof(OPENFILENAME) in the headers we use when compiling the
 377     // library could be less if _WIN32_WINNT is not >= 0x500
 378     static const DWORD wxOPENFILENAME_V5_SIZE = 88;
 379
 380     // this is hardcoded sizeof(OPENFILENAME_NT4) from Platform SDK
 381     static const DWORD wxOPENFILENAME_V4_SIZE = 76;
 382
 383     // always try the new one first
 384     static DWORD gs_ofStructSize = wxOPENFILENAME_V5_SIZE;
 385 #endif // __WXWINCE__ || __WIN64__/!...
 386
 387 static bool ShowCommFileDialog(OPENFILENAME *of, long style)
 388 {
 389     DWORD errCode;
 390     bool success = DoShowCommFileDialog(of, style, &errCode);
 391
 392 #ifdef wxTRY_SMALLER_OPENFILENAME
 393     // the system might be too old to support the new version file dialog
 394     // boxes, try with the old size
 395     if ( !success && errCode == CDERR_STRUCTSIZE &&
 396             of->lStructSize != wxOPENFILENAME_V4_SIZE )
 397     {
 398         of->lStructSize = wxOPENFILENAME_V4_SIZE;
 399
 400         success = DoShowCommFileDialog(of, style, &errCode);
 401
 402         if ( success || !errCode )
 403         {
 404             // use this struct size for subsequent dialogs
 405             gs_ofStructSize = of->lStructSize;
 406         }
 407     }
 408 #endif // wxTRY_SMALLER_OPENFILENAME
 409
 410     if ( !success &&
 411             // FNERR_INVALIDFILENAME is not defined under CE (besides we don't
 412             // use CommDlgExtendedError() there anyhow)
 413 #ifndef __WXWINCE__
 414             errCode == FNERR_INVALIDFILENAME &&
 415 #endif // !__WXWINCE__
 416                 of->lpstrFile[0] )
 417     {
 418         // this can happen if the default file name is invalid, try without it
 419         // now
 420         of->lpstrFile[0] = wxT('\0');
 421         success = DoShowCommFileDialog(of, style, &errCode);
 422     }
 423
 424     if ( !success )
 425     {
 426         // common dialog failed - why?
 427         if ( errCode != 0 )
 428         {
 429             wxLogError(_("File dialog failed with error code %0lx."), errCode);
 430         }
 431         //else: it was just cancelled
 432
 433         return false;
 434     }
 435
 436     return true;
 437 }
 438
 439 #ifndef __WXWINCE__
 440 void wxFileDialog::MSWOnInitDialogHook(WXHWND hwnd)
 441 {
 442    SetHWND(hwnd);
 443
 444    CreateExtraControl();
 445
 446    SetHWND(NULL);
 447 }
 448 #endif // __WXWINCE__
 449
 450 int wxFileDialog::ShowModal()
 451 {
 452     HWND hWnd = 0;
 453     if (m_parent) hWnd = (HWND) m_parent->GetHWND();
 454     if (!hWnd && wxTheApp->GetTopWindow())
 455         hWnd = (HWND) wxTheApp->GetTopWindow()->GetHWND();
 456
 457     static wxChar fileNameBuffer [ wxMAXPATH ];           // the file-name
 458     wxChar        titleBuffer    [ wxMAXFILE+1+wxMAXEXT ];  // the file-name, without path
 459
 460     *fileNameBuffer = wxT('\0');
 461     *titleBuffer    = wxT('\0');
 462
 463     long msw_flags = OFN_HIDEREADONLY;
 464
 465     if ( HasFdFlag(wxFD_FILE_MUST_EXIST) )
 466         msw_flags |= OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
 467     /*
 468         If the window has been moved the programmer is probably
 469         trying to center or position it.  Thus we set the callback
 470         or hook function so that we can actually adjust the position.
 471         Without moving or centering the dlg, it will just stay
 472         in the upper left of the frame, it does not center
 473         automatically.
 474     */
 475     if (m_bMovedWindow || HasExtraControlCreator()) // we need these flags.
 476     {
 477         ChangeExceptionPolicy();
 478         msw_flags |= OFN_EXPLORER|OFN_ENABLEHOOK;
 479 #ifndef __WXWINCE__
 480         msw_flags |= OFN_ENABLESIZING;
 481 #endif
 482     }
 483
 484     wxON_BLOCK_EXIT0(RestoreExceptionPolicy);
 485
 486     if ( HasFdFlag(wxFD_MULTIPLE) )
 487     {
 488         // OFN_EXPLORER must always be specified with OFN_ALLOWMULTISELECT
 489         msw_flags |= OFN_EXPLORER | OFN_ALLOWMULTISELECT;
 490     }
 491
 492     // if wxFD_CHANGE_DIR flag is not given we shouldn't change the CWD which the
 493     // standard dialog does by default (notice that under NT it does it anyhow,
 494     // OFN_NOCHANGEDIR or not, see below)
 495     if ( !HasFdFlag(wxFD_CHANGE_DIR) )
 496     {
 497         msw_flags |= OFN_NOCHANGEDIR;
 498     }
 499
 500     if ( HasFdFlag(wxFD_OVERWRITE_PROMPT) )
 501     {
 502         msw_flags |= OFN_OVERWRITEPROMPT;
 503     }
 504
 505     wxOPENFILENAME of;
 506     wxZeroMemory(of);
 507
 508     of.lStructSize       = gs_ofStructSize;
 509     of.hwndOwner         = hWnd;
 510     of.lpstrTitle        = m_message.t_str();
 511     of.lpstrFileTitle    = titleBuffer;
 512     of.nMaxFileTitle     = wxMAXFILE + 1 + wxMAXEXT;
 513
 514 #ifndef __WXWINCE__
 515     GlobalPtr hgbl;
 516     if ( HasExtraControlCreator() )
 517     {
 518         msw_flags |= OFN_ENABLETEMPLATEHANDLE;
 519
 520         hgbl.Init(256, GMEM_ZEROINIT);
 521         GlobalPtrLock hgblLock(hgbl);
 522         LPDLGTEMPLATE lpdt = static_cast<LPDLGTEMPLATE>(hgblLock.Get());
 523
 524         // Define a dialog box.
 525
 526         lpdt->style = DS_CONTROL | WS_CHILD | WS_CLIPSIBLINGS;
 527         lpdt->cdit = 0;         // Number of controls
 528         lpdt->x = 0;
 529         lpdt->y = 0;
 530
 531         // convert the size of the extra controls to the dialog units
 532         const wxSize extraSize = GetExtraControlSize();
 533         const LONG baseUnits = ::GetDialogBaseUnits();
 534         lpdt->cx = ::MulDiv(extraSize.x, 4, LOWORD(baseUnits));
 535         lpdt->cy = ::MulDiv(extraSize.y, 8, HIWORD(baseUnits));
 536
 537         // after the DLGTEMPLATE there are 3 additional WORDs for dialog menu,
 538         // class and title, all three set to zeros.
 539
 540         of.hInstance = (HINSTANCE)lpdt;
 541     }
 542 #endif // __WXWINCE__
 543
 544     // Convert forward slashes to backslashes (file selector doesn't like
 545     // forward slashes) and also squeeze multiple consecutive slashes into one
 546     // as it doesn't like two backslashes in a row neither
 547
 548     wxString  dir;
 549     size_t    i, len = m_dir.length();
 550     dir.reserve(len);
 551     for ( i = 0; i < len; i++ )
 552     {
 553         wxChar ch = m_dir[i];
 554         switch ( ch )
 555         {
 556             case wxT('/'):
 557                 // convert to backslash
 558                 ch = wxT('\\');
 559
 560                 // fall through
 561
 562             case wxT('\\'):
 563                 while ( i < len - 1 )
 564                 {
 565                     wxChar chNext = m_dir[i + 1];
 566                     if ( chNext != wxT('\\') && chNext != wxT('/') )
 567                         break;
 568
 569                     // ignore the next one, unless it is at the start of a UNC path
 570                     if (i > 0)
 571                         i++;
 572                     else
 573                         break;
 574                 }
 575                 // fall through
 576
 577             default:
 578                 // normal char
 579                 dir += ch;
 580         }
 581     }
 582
 583     of.lpstrInitialDir   = dir.c_str();
 584
 585     of.Flags             = msw_flags;
 586     of.lpfnHook          = wxFileDialogHookFunction;
 587     of.lCustData         = (LPARAM)this;
 588
 589     wxArrayString wildDescriptions, wildFilters;
 590
 591     size_t items = wxParseCommonDialogsFilter(m_wildCard, wildDescriptions, wildFilters);
 592
 593     wxASSERT_MSG( items > 0 , wxT("empty wildcard list") );
 594
 595     wxString filterBuffer;
 596
 597     for (i = 0; i < items ; i++)
 598     {
 599         filterBuffer += wildDescriptions[i];
 600         filterBuffer += wxT("|");
 601         filterBuffer += wildFilters[i];
 602         filterBuffer += wxT("|");
 603     }
 604
 605     // Replace | with \0
 606     for (i = 0; i < filterBuffer.length(); i++ ) {
 607         if ( filterBuffer.GetChar(i) == wxT('|') ) {
 608             filterBuffer[i] = wxT('\0');
 609         }
 610     }
 611
 612     of.lpstrFilter  = filterBuffer.t_str();
 613     of.nFilterIndex = m_filterIndex + 1;
 614
 615     //=== Setting defaultFileName >>=========================================
 616
 617     wxStrlcpy(fileNameBuffer, m_fileName.c_str(), WXSIZEOF(fileNameBuffer));
 618
 619     of.lpstrFile = fileNameBuffer;  // holds returned filename
 620     of.nMaxFile  = wxMAXPATH;
 621
 622     // we must set the default extension because otherwise Windows would check
 623     // for the existing of a wrong file with wxFD_OVERWRITE_PROMPT (i.e. if the
 624     // user types "foo" and the default extension is ".bar" we should force it
 625     // to check for "foo.bar" existence and not "foo")
 626     wxString defextBuffer; // we need it to be alive until GetSaveFileName()!
 627     if (HasFdFlag(wxFD_SAVE))
 628     {
 629         const wxChar* extension = filterBuffer.t_str();
 630         int maxFilter = (int)(of.nFilterIndex*2L) - 1;
 631
 632         for( int i = 0; i < maxFilter; i++ )           // get extension
 633             extension = extension + wxStrlen( extension ) + 1;
 634
 635         // use dummy name a to avoid assert in AppendExtension
 636         defextBuffer = AppendExtension(wxT("a"), extension);
 637         if (defextBuffer.StartsWith(wxT("a.")))
 638         {
 639             defextBuffer = defextBuffer.Mid(2); // remove "a."
 640             of.lpstrDefExt = defextBuffer.c_str();
 641         }
 642     }
 643
 644     // store off before the standard windows dialog can possibly change it
 645     const wxString cwdOrig = wxGetCwd();
 646
 647     //== Execute FileDialog >>=================================================
 648
 649     if ( !ShowCommFileDialog(&of, m_windowStyle) )
 650         return wxID_CANCEL;
 651
 652     // GetOpenFileName will always change the current working directory on
 653     // (according to MSDN) "Windows NT 4.0/2000/XP" because the flag
 654     // OFN_NOCHANGEDIR has no effect.  If the user did not specify
 655     // wxFD_CHANGE_DIR let's restore the current working directory to what it
 656     // was before the dialog was shown.
 657     if ( msw_flags & OFN_NOCHANGEDIR )
 658     {
 659         wxSetWorkingDirectory(cwdOrig);
 660     }
 661
 662     m_fileNames.Empty();
 663
 664     if ( ( HasFdFlag(wxFD_MULTIPLE) ) &&
 665 #if defined(OFN_EXPLORER)
 666          ( fileNameBuffer[of.nFileOffset-1] == wxT('\0') )
 667 #else
 668          ( fileNameBuffer[of.nFileOffset-1] == wxT(' ') )
 669 #endif // OFN_EXPLORER
 670        )
 671     {
 672 #if defined(OFN_EXPLORER)
 673         m_dir = fileNameBuffer;
 674         i = of.nFileOffset;
 675         m_fileName = &fileNameBuffer[i];
 676         m_fileNames.Add(m_fileName);
 677         i += m_fileName.length() + 1;
 678
 679         while (fileNameBuffer[i] != wxT('\0'))
 680         {
 681             m_fileNames.Add(&fileNameBuffer[i]);
 682             i += wxStrlen(&fileNameBuffer[i]) + 1;
 683         }
 684 #else
 685         wxStringTokenizer toke(fileNameBuffer, wxT(" \t\r\n"));
 686         m_dir = toke.GetNextToken();
 687         m_fileName = toke.GetNextToken();
 688         m_fileNames.Add(m_fileName);
 689
 690         while (toke.HasMoreTokens())
 691             m_fileNames.Add(toke.GetNextToken());
 692 #endif // OFN_EXPLORER
 693
 694         wxString dir(m_dir);
 695         if ( m_dir.Last() != wxT('\\') )
 696             dir += wxT('\\');
 697
 698         m_path = dir + m_fileName;
 699         m_filterIndex = (int)of.nFilterIndex - 1;
 700     }
 701     else
 702     {
 703         //=== Adding the correct extension >>=================================
 704
 705         m_filterIndex = (int)of.nFilterIndex - 1;
 706
 707         if ( !of.nFileExtension ||
 708              (of.nFileExtension && fileNameBuffer[of.nFileExtension] == wxT('\0')) )
 709         {
 710             // User has typed a filename without an extension:
 711             const wxChar* extension = filterBuffer.t_str();
 712             int   maxFilter = (int)(of.nFilterIndex*2L) - 1;
 713
 714             for( int i = 0; i < maxFilter; i++ )           // get extension
 715                 extension = extension + wxStrlen( extension ) + 1;
 716
 717             m_fileName = AppendExtension(fileNameBuffer, extension);
 718             wxStrlcpy(fileNameBuffer, m_fileName.c_str(), WXSIZEOF(fileNameBuffer));
 719         }
 720
 721         m_path = fileNameBuffer;
 722         m_fileName = wxFileNameFromPath(fileNameBuffer);
 723         m_fileNames.Add(m_fileName);
 724         m_dir = wxPathOnly(fileNameBuffer);
 725         }
 726
 727     return wxID_OK;
 728
 729 }
 730
 731 #endif // wxUSE_FILEDLG && !(__SMARTPHONE__ && __WXWINCE__)